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Athena

Athena 08-13 Yamaha WR 250 F 76.97mm Bore Forged 4-Stroke Top End Piston Kit w/Top End Gasket

$259.95 $202.75 Save $57.20

SKU: A0EF P5F0770039007B

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In Stock
Ships by Jun 20
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

This Athena Top End Piston Kit includes a forged 4-stroke piston and a top-end gasket kit. The piston is made of a high-performance aluminum alloy with high silicon content for reliability, resistance, and performance. Its smooth profile ensures regular flow and perfect flame propagation. Some pistons have molybdenum disulfide coating on skirts to reduce friction. The piston rings (Made in Japan) have wear-resistant coatings (PVD or chromium nitride). Athena gasket kits are developed internally with strict production parameters.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAthena
Part NumberA0EF P5F0770039007B

Videos

Part 1: Installing Athena 290 Big Bore Kit- Yamaha WR/ YZ 250

Part 1: Installing Athena 290 Big Bore Kit- Yamaha WR/ YZ 250
REPLACE YOUR MOTORCYCLE’S CYLINDER HEAD GASKET: STEP-BY-STEP GUIDE

REPLACE YOUR MOTORCYCLE’S CYLINDER HEAD GASKET: STEP-BY-STEP GUIDE
NEW PRODUCT Athena Top End Piston Kit - 2T 4T 🆕

NEW PRODUCT Athena Top End Piston Kit - 2T 4T 🆕
What's New - Athena new off-road Piston line

What's New - Athena new off-road Piston line
Top End Piston Kit: all you need in one kit! 🔥

Top End Piston Kit: all you need in one kit! 🔥
Athena 304cc Big Bore POWER! WR250F Gets a MASSIVE Upgrade! 🔥

Athena 304cc Big Bore POWER! WR250F Gets a MASSIVE Upgrade! 🔥

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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